Privacy considerations for network slice selection

Abstract

User equipment performing communication with a core network node by using network slices obtained by logically dividing a network includes: means for sending information related to security of one network slice; and means for sending identity information of the one network slice in a secure method, based on a request to send information in the secure method sent from the core network node based on the sent information.

The invention claimed is: 
     
       1. A User Equipment (UE) comprising:
 one or more memories storing instructions; and 
 one or more processors configured to execute the instructions to: 
 receive, from an Access and Mobility Management Function (AMF) node, a registration accept message including mobility restrictions if the mobility restrictions apply for the UE, and a parameter indicating whether or not the UE includes a first Network Slice Selection Assistance Information (NSSAI) according to a control of an operator, wherein the reception of the registration accept message including the parameter controls the UE to enable a privacy for the first NSSAI, and 
 include a second NSSAI in a Non Access Stratum (NAS) message based on the parameter. 
 
     
     
       2. A control method in a User Equipment (UE), the control method comprising:
 receiving, from an Access and Mobility Management Function (AMF) node, a registration accept message including mobility restrictions if the mobility restrictions apply for the UE, and a parameter indicating whether or not the UE includes a first Network Slice Selection Assistance Information (NSSAI) according to a control of an operator, wherein the reception of the registration accept message including the parameter controls the UE to enable a privacy for the first NSSAI; and 
 including a second NSSAI in a Non Access Stratum (NAS) message based on the parameter. 
 
     
     
       3. An Access and Mobility Management Function (AMF) node, comprising:
 one or more memories storing instructions; and 
 one or more processors configured to execute the instructions to: 
 send, to a User Equipment (UE), a registration accept message including mobility restrictions if the mobility restrictions apply for the UE, and a parameter indicating whether or not the UE includes a first Network Slice Selection Assistance Information (NSSAI) according to a control of an operator, wherein the reception of the registration accept message including the parameter controls the UE to enable a privacy for the first NSSAI, and 
 cause the UE to include a second NSSAI in a Non Access Stratum (NAS) message based on the parameter. 
 
     
     
       4. A control method of an Access and Mobility Management Function (AMF) node, the control method comprising:
 sending, to a User Equipment (UE), a registration accept message including mobility restrictions if the mobility restrictions apply for the UE, and a parameter indicating whether or not the UE includes a first Network Slice Selection Assistance Information (NSSAI) according to a control of an operator, wherein the reception of the registration accept message including the parameter controls the UE to enable a privacy for the first NSSAI; and 
 causing the UE to include a second NSSAI in a Non Access Stratum (NAS) message based on the parameter. 
 
     
     
       5. The UE of  claim 1 , wherein the parameter indicates that the UE shall treat a first slice of a plurality of slices as private.